KR0139364B1 - Pole base driving apparatus for a camcorder - Google Patents

Abstract

The present invention relates to a pole base driving apparatus of a camcorder.

Conventionally, as the sub deck moves to the drum by the cam gear, the sliding portions of both loading arms are rotatably fixed to both of the upper portions of the plate sliders moving up and down on the main deck, and are slid by the pins of the levers on which the elastic members are installed. As both loading arms are rotated outwards about the fixed axis, the plate slider moves upwards as the plate slider moves upward, and the loading starts along the loading grooves. It had an increasing problem.

SUMMARY OF THE INVENTION The present invention solves this conventional problem, and includes a loading arm (49) on a slider (24) which moves from side to side to enable pinch rollers, reel brakes and housing ejection operations by cam gears on the main deck. The cam grooves 39 and 40 are formed to move 50 so that the pole base can be driven.

Description

Pole base drive unit of the camcorder

1 is a schematic plan view illustrating a loading mode of a camcorder deck to which the present invention is applied.

2 is a schematic plan view of a camcorder main deck to which the present invention is applied.

3 is a schematic plan view of a camcorder sub deck to which the present invention is applied;

4 is a cross-sectional view of the present invention.

(A) (b) (c) of FIG. 5 is an operating state diagram of the present invention.

6 is a schematic schematic plan view of the prior art;

* Explanation of symbols for the main parts of the drawings

20: main deck 21: cam gear

23: Sub Deck 24: Slider

27: 2nd guide projection 28: 2nd cam home

33: 2nd guide protrusion 34: 3rd guide protrusion

35: first guide groove 36: second guide groove

Paul Base 39: Third Cam Home

40: 4th cam home 47, 48: hinge

49, 50: loading arm 50, 50a, 51, 51a: moving protrusion

52,53: left and right moving section 54, 55: up and down moving section

58,59: Slope moving section 60, 61: Left and right moving section

62,63: elastic member

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pole base driving device for loading a magnetic tape onto a drum in a camcorder, and in particular, a pole base together with a slider movement for releasing a reel brake in conjunction with a cam gear and moving a pinch roller to a loading position. A pole base driving apparatus of a camcorder capable of driving a loading arm of.

Conventionally, as shown in FIG. 6, the power of the loading motor 1 is transmitted to the cam gear 2 through a series of gears, so that the cam deck 4 is guided to the first cam groove 3 by the sub-deck. The sliding portions 8 and 8a of both loading arms 7 and 7a are rotatable on both sides of the upper part of the plate slider 10 moving up and down on the main deck 9 while the 5 is moved toward the drum 6. Is fixed so that both loading arms 7 and 7a are caught by the pins 13 and 13a of the levers 12 and 12a on which the elastic members 11 and 11a are installed. As the plate slider 10 moves upward while rotating outwardly about the respective 14a, the pawl bases 15 and 15a linked to the ends of the loading arms 7 and 7a are loaded with the loading grooves 16. The loading starts along 16a.

In such a conventional apparatus, the plate slider 10 is installed for one purpose of driving the pole bases 15 and 15a, and the guide 13 and the pin 13 and 13a are installed to be movable up and down on the main deck. ), The number of parts due to fixing the lever (12) (12a) is installed to increase the assembly process and increase the cost.

The present invention solves these problems and reduces the components constituting the pole base drive device, and move from side to side to enable pinch rollers, reel brake operation and housing ejection operation by cam gear on the main deck. It is to provide a pole base drive device which can reduce the parts and simplify the deck structure by enabling the pole base to be driven by the slider.

The present invention for achieving this object is:

In forming a camcorder in which the sub deck moves on the main deck,

In conjunction with a cam gear fixed on the main deck, the pinch roller is pressed against the capstan shaft, releases the braking force of the reel brake, activates the eject lever to eject the housing, and slides the slider left and right on the main deck. The loading driving of the base was enabled,

Left and right moving sections which can be moved left and right by cam gears fixed on the main deck so that the fixed end of the loading arm fixed to the sub deck is inserted immediately before the sub deck moves toward the drum,

A vertical movement section in which the fixed end of the loading arm fixed to the sub deck is guided when the sub deck moves during the tape loading and unloading subsequent to the left and right movement sections;

A slider having a left and right moving section having an inclined moving section in which the loading arm is guided so that the pole base can load the tape through the loading groove when the sub deck moves in succession with the vertical moving section and is aligned with the main deck;

It is a structural feature that comprises means for bringing the pawl base into close contact with the top of the loading groove.

The pole base driving apparatus of the present invention provides a structure that is particularly suitable for the trend of product development, which is easy to assemble with fewer parts, which facilitates assembly of parts, and becomes smaller and lighter.

Hereinafter, an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

1 to 5 show an embodiment of the present invention.

As shown in FIGS. 1 and 2, the cam gear 21 is fixed on the main deck 20, and a slider 24 placed below the sub deck 23 is placed above the cam gear 21. have.

The cam gear 21 has a first cam groove 26 through which the cam deck 25 for sub deck operation for moving the sub deck 23 to the main deck 20 is guided, and a first guide protrusion of the slider 24. As the 27 is inserted and the cam gear 21 is driven, the second cam groove 28 is formed so that the slider 24 can be interlocked.

The cam gear 21 receives power from the reduction gear 30 for decelerating the power of the drive motor 29 through the electric gears 31 and 32.

The electric cam gear 32 is equipped with the mode switch which can perform mode switching operation.

The slider 24 is a second and second fixed to the main deck 20 so that the cam gear 21 is rotated so that the first guide protrusion 27 is guided to the second cam groove 28 and moved to the left and right sides when interlocked. The first and second guide grooves 35 and 36 guided by the three guide protrusions 33 and 34 are formed, and the supply side pole base 37 and the take-back pole base 38 operate. The fourth cam grooves 39 and 40 and the fifth cam grooves 42 for operating the pinch roller lever 41 are formed, and the supply reel brake 43 and the take-up brake 44 are provided at both ends of the lower end. Protruding portions 45 and 46 for releasing braking force have a structure that is bent upward.

As shown in FIG. 3, the pawl bases 37 and 38 are connected to the rotary end of the loading arms 49 and 50 rotatably fixed to the sub-deck 23 by hinges 47 and 48. 70) and 71.

The loading arms 49 and 50 have the hinges 47 and 48 in the center, respectively, and the moving protrusions 50, 50a and the fourth cam groove which are inserted into the third cam grooves 39 formed on the sliders 24 on both sides, respectively. The moving protrusions 51 and 51a inserted into the 40 are projected downward.

The third cam groove 39 and the fourth cam groove 40 move the slider 24 while the moving protrusions 50, 50a, 51, 51a of the loading arms 49, 50 are inserted, respectively. When the sub deck 23 moves from the upper part of the main deck 20 toward the drum 54 by the left and right moving sections 52 and 53 and the sub-deck operation cam lever 25 to start loading. The vertical movement sections 54 and 55 for guiding the projections 50, 50a, 51 and 51a, and the pawl bases 37 and 38 are loading grooves 56 and 57 on the drum 54 side. Left and right movement sections 60 and 61 having inclined movement sections 58 and 59 for rotating the loading arms 49 and 50 about the hinges 47 and 48 so as to complete loading on It is.

The third cam groove 39 is separated so that the moving protrusions 50 and 50a can respectively move, and the fourth cam groove 40 has a left and right moving section 61 having inclined moving sections 59 connected to each other. In form.

Where the pole base 37, 38 is connected to the connection levers 70, 71, the pole base 37, 38 can be pressed onto the top of the loading grooves 56, 57 when the loading is completed. Elastic members 62 and 63 are provided.

The elastic members 62 and 63 may be selected as members such as torsion springs, one end of which is supported by the connecting levers 52 and 53, and the other end of which is connected to the pole bases 37 and 38. Supported.

Looking at the process of operating the present invention as follows.

5 shows step by step the order in which the present invention is loaded.

Referring to this figure, as shown in (a), when the taped housing is locked to the sub deck 23 (this part is not shown), the loading arms 49 and 50 fixed to the sub deck 23 are shown. Moving projections 50, 50a, 51, 51a of the driving motor 29 at the first position of the left and right moving sections 52, 53 of the third and fourth cam grooves 39, 40. The cam gear 21 which received the power rotates, and the slider 24 is moved to the left slightly, and it is located in the position where the up-and-down movement sections 54 and 55 begin.

At this time, the slider 24 is slightly moved to the left while the protrusions 45 and 46 release the braking force of the supply reel brake 43 and the take-up brake 44, so that the tape can be loaded.

Subsequently, as shown in (b), a cam lever 25 for a known sub deck operation, which is interlocked with the first cam groove 26 by the cam gear 21 which rotates continuously, is directed toward the drum 54. When the 23 is moved, the moving protrusions 50, 50a, 51, and 51a are guided to the vertical movement sections 54 and 55 to be pushed in to start loading the tape, and the sub deck 23 moves. When the stop is stopped, the loading grooves 64 and 65 of the sub deck 23 and the loading grooves 56 and 57 of the main deck 20 coincide with each other, and the moving protrusions 50, 50a, 51 and 51a ) Is positioned at the upper portion of the vertical movement section (54, 55), the sub cam 23 is moved in the upper portion of the main deck 20, the structure of the second cam groove 28 is the slider 24 It is formed so that there is no movement of so that the loading arms 49 and 50 together with the sub deck 23 can approach the drum 54 group.

In this state of primary loading, as shown in (c), as the second cam groove 28 of the cam gear 21 comes closer to the center, the slider 24 starts to move to the left, and at this time, the slope The loading arms 49 and 50 rotate about the hinges 47 and 48 by the left and right movement sections 60 and 61 having the movement sections 58 and 59 formed therein. Push up the pole base (37) (38) to the top of the elastic member 62, 63 is to press the tape to complete the loading. That is, when the slider 24 moves to the left, the moving projection 50 placed on the upper and lower moving sections 54 is guided to the inclined moving section 58 so that the loading arm on the supply side around the hinge 47 ( 49 is rotated in the clockwise direction to reach the upper left and right movement section 60, the take-up loading arm 50 is moved below the inclined movement section 59 at the top of the vertical movement section 55 The protrusion 51 is placed, and the moving protrusion 51a is guided upward to rotate counterclockwise on the drawing, and the unloading is performed in the reverse order of the above process.

As described above, the present invention has the effect of reducing the parts and reducing the assembly process by simplifying the configuration for loading the tape by driving the pole base with a slider that performs multifunction.

Claims (4)

In forming a camcorder in which a sub deck having a pole base formed on the main deck is moved by a cam gear, a fixed end of the loading arm is guided to a slider that is moved left and right by a cam gear fixed on the main deck so that the sub deck is drummed. And the loading arm is rotated by the slider moving laterally when the sub deck is stopped, and the loading of the pole base is completed. 2. The slider according to claim 1, wherein the slider is guided by a left and right moving section capable of horizontally moving with the fixed end of the loading arm inserted and a fixed end of the loading arm fixed to the sub deck when the sub deck moves during tape loading and unloading. And a vertical movement section having a vertical movement section, and an inclined movement section in which the loading arm is guided so that the pole base can load the tape through the loading groove when the sub deck moves to coincide with the main deck. Pole base drive unit of the camcorder. The pole base driving apparatus of a camcorder according to claim 1, further comprising an elastic member for pressing the pole base to an end portion of the drum side loading groove at a pole base side connection portion of the coupling lever connecting the loading arm and the pole base. . The apparatus of claim 1, wherein the slider moves immediately before the sub deck moves toward the drum such that the fixed end of the loading arm is positioned at the start position of the vertical movement section from the left and right movement sections.